Aquarium Co-Op Coarse Sponge Filter with Easy Flow Kit

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  • Air collar makes smaller bubbles for improved performance
  • Easy Flow accessory increases water circulation
  • Coarse, anti-clogging sponge
  • Weighted base sinks instantly and helps prevent floating

Sponge filters offer reliability and hassle-free operation. With no moving parts, all you need is an air pump with some airline tubing, and you've got a filter that is fully contained within your aquarium.  Sponge filters are completely reusable, don't need any replacement cartridges, and last for several years. Plus, they are gentle enough for betta fish, baby fry, shrimp, and other slow-moving species. Trusted by fish farms and wholesalers, they are an excellent choice for aquarium filtration that you can set and forget.

To optimize the sponge filter’s performance, we’ve included an air collar that replaces the need for an air stone and minimizes bubbles coming out of the side of the sponge. The air collar produces smaller bubbles that lessen noise and create more continuous current. If you need greater water circulation, use the included Easy Flow accessory that curves the uplift tube so that water flows out of the sponge filter horizontally across the water surface and around the aquarium.

The Aquarium Co-Op sponge filter is designed using coarse foam so that it can go many weeks between cleanings. The weighted base will immediately sink to the bottom of your aquarium, so no more floating up after a water change or initial installation. Also, the green plastic helps hide algae and blend in with your live aquarium plants.

Customer Reviews

Based on 2822 reviews
93%
(2631)
4%
(105)
1%
(41)
0%
(14)
1%
(31)
J
John C. (Newton, MA, US)

Aquarium Co-Op Coarse Sponge Filter with Easy Flow Kit

J
Joseph M. (Buffalo, NY, US)
Loving it

I love this product right out of the box … I’m no good however at the puzzle once it’s in parts in a bucket with the rest… lol gotta really figure that out before I have more loans on my house supporting my hobby !!!

G
Gabriel B. (New Bedford, MA, US)
The best sponge EVER

The only sponge I’ll ever use

L
Lauren (Mount Juliet, TN, US)
It works and easy to put together.

I've always used HOB filters in my tanks but wanted to seed a filter in case of emergency. We all know how that goes. Everything is working swimmingly!

C
Charlie T. (Saint Paul, MN, US)
Overall servoce

Perfect service each and every time.